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J-Madd

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Everything posted by J-Madd

  1. J-Madd
    Yes. And clean up the dome as well. Sometimes I run the head and domes over a flat surface(marble,etc) on fine grit oiled sandpaper to resurface if there's a problem, but it may not be necessary. Do a leak down test with rad cap off and you should be good.
  2. J-Madd
    0.020" minimum and be done with it?
  3. J-Madd
    I think the oring caused your issue, not the other way around.
  4. J-Madd
    Water leak will cause deto. Fix the water leak and you should be fine. A leak down test can sometimes find a dome oring leak, but you need to make sure the radiator cap is off.
  5. J-Madd
    What sprocket did you go with?
  6. J-Madd
    On motor, PPS triple went 3.25 with like a 1.19 60' if I remember. K&T went 3.24 I think. Don't know that 60'. PPS triple is in Puerto Rico now. New build in progress I think. Those are both spread bores though. That was a Gilbert 2 different years.
  7. J-Madd
    The aftermarket pancake bearing would not normally do that. Are you sure the clutch adjuster isn't stock? I've had a ceramic ball break and cause worse problems.
  8. J-Madd
    Different builders set them up differently, but here are Calvin's specs. It says 0.022".
  9. J-Madd
    ^^^^Yep. That being said, I have some flat top pistons that used to have a crown that I'm currently running in a Twister Sniper motor. Precision Powersports cut the pistons and designed the domes.
  10. J-Madd
    Tranny was broke.
  11. J-Madd
    Picked up a tenth on 421 Cub with staggered over straight. I see no reason to ever run straights in 300 ft. JMO
  12. J-Madd
    Have you ran it since you fixed the coil wire? Maybe the plugs fouled when TORS took a crap? You already have some other troubleshooting tips covered.
  13. J-Madd
    The piston speed is a lot higher with the 10 mil. With low port timing and this less RPMs it would last longer, IMO. Good to know you can run wot. I locked up 2 cubs like that, which I've mentioned before.
  14. J-Madd
    At 100% volumetric efficiency at 10,000 rpms I come up with 37 cfm per cylinder, I don't know if the motor is more or less the 100% VE though. I also just used google to find these calculations, and I don't pretend to know this.
  15. J-Madd
    It'll have power loss and cut out. Yes you can usually pop the clutch or down shift and run WOT for a bit to clear it out.
  16. J-Madd
    If you mean ignition timing, it won't change. If you mean port timing, it has to be changed to accommodate the piston going 2 mm further up, and 2 mm further down.
  17. J-Madd
    Clean the bore with brake cleaner before assembly.
  18. J-Madd
    X2!
  19. J-Madd
    Triple, 4 cylinder, car, I just want to see.
  20. J-Madd
    At least 2 on 1st page in the swap shop that I wasn't too lazy to look at. Can't post link with tapatalk.
  21. J-Madd
    I bet no time slips get posted here.
  22. J-Madd
    NYUK is cool. And a good mod, I was just venting, I guess. These people whom I've never heard of and are doing this. They're probably not crooked ass crooks, but it's not that hard to post pics.
  23. J-Madd
    Still have to port for 4 mil. Compression can be whatever you want.
  24. J-Madd
    Just go to for sale section.
  25. J-Madd
    Motor or nitrous? Asphalt or dirt?

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